leonardo da vinci : the codex leicester

how can one determine the weight of a ball in parts?

one must hang the ball, whose total weight has been ascertained before, on a rope. the hanging rope produces a perpendicular. now one hangs a known weight, which corresponds to a certain part of the weight of the ball, next to the ball, by which the ball will be knocked off the perpendicular. for example, if one wants to find a one-pound part of a three-pound heavy ball, one hangs a one-pound weight next to the ball. now one pound of the ball is hanging on one side of the perpendicular and two pounds of the ball are handing on the other side. the perpendicular thus defines the potential point of intersection for removing one part weighing one pound.






  1. does the earth have a circulatory system of water?
  2. can it be proven that the interior of the earth is permeated with underground streams?
  3. how does a river start on top of a mountain?
  4. why doesn't water cover the entire earth?
  5. did water originally come from the earth's interior?
  6. why does water flow upwards if it is blocked directly at the source?
  7. why doesn't evaporated water rise?
  8. why does more water flow out of an underground stream than from a higher region?
  9. how does water behave in a container when someone knocks the container?
  10. how can one dispel the error that claims the sea level is higher than the highest mountain?
  11. how can one determine the weight of a ball in parts?
  12. does the length of a pipe influence the speed of the flow through it?
  13. how can one determine the volume of evaporated water?
  14. why does smoke change its speed when ascending?
  15. ändert sich das wassergewicht, je nachdem, wie man eine wassergefüllte rohre neigt?
  16. how does a water bubble seal itself?
  17. why is the sky blue?
  18. how does air thicken?

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